99extra Underwear, Men's Sexy 3 Color Ice Silk Jock Strap 95% Ice Silk/5% Spandex Imported Ice silk is a kind of new materials more breathable and soft than cotton. To prevent snake pattern will not fade, there has fiber pulp cover the underwear's surface layer, it looks a little rough, but does not affect the inner layer's soft Special Jock Strap design, more sexy and cool Use correct washing method, cool or warm water with neutral detergent, gently machine wash without bleaching and drying, it still keep bright and shape after a lot of repeat washing Doctor advised a underwear don't use more than 6 months because it will become very dirty although you repeated wash it